Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_dac.c
- Revision:
- 18:6a4db94011d3
diff -r f713758f6238 -r 6a4db94011d3 mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_dac.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_dac.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,94 @@ +/**************************************************************************//** + * @file dac.c + * @version V2.00 + * $Revision: 8 $ + * $Date: 15/08/11 10:26a $ + * @brief M451 series DAC driver source file + * + * @note + * Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved. +*****************************************************************************/ +#include "M451Series.h" + +/** @addtogroup Standard_Driver Standard Driver + @{ +*/ + +/** @addtogroup DAC_Driver DAC Driver + @{ +*/ + +/** @addtogroup DAC_EXPORTED_FUNCTIONS DAC Exported Functions + @{ +*/ + +/** + * @brief This function make DAC module be ready to convert. + * @param[in] dac Base address of DAC module. + * @param[in] u32Ch Not used in M451 Series DAC. + * @param[in] u32TrgSrc Decides the trigger source. Valid values are: + * - \ref DAC_WRITE_DAT_TRIGGER :Write DAC_DAT trigger + * - \ref DAC_SOFTWARE_TRIGGER :Software trigger + * - \ref DAC_LOW_LEVEL_TRIGGER :STDAC pin low level trigger + * - \ref DAC_HIGH_LEVEL_TRIGGER :STDAC pin high level trigger + * - \ref DAC_FALLING_EDGE_TRIGGER :STDAC pin falling edge trigger + * - \ref DAC_RISING_EDGE_TRIGGER :STDAC pin rising edge trigger + * - \ref DAC_TIMER0_TRIGGER :Timer 0 trigger + * - \ref DAC_TIMER1_TRIGGER :Timer 1 trigger + * - \ref DAC_TIMER2_TRIGGER :Timer 2 trigger + * - \ref DAC_TIMER3_TRIGGER :Timer 3 trigger + * - \ref DAC_PWM0_TRIGGER :PWM0 trigger + * - \ref DAC_PWM1_TRIGGER :PWM1 trigger + * @return None + * @details The DAC conversion can be started by writing DAC_DAT, software trigger or hardware trigger. + * When TRGEN (DAC_CTL[4]) is 0, the data conversion is started by writing DAC_DAT register. + * When TRGEN (DAC_CTL[4]) is 1, the data conversion is started by SWTRG (DAC_SWTRG[0]) is set to 1, + * external STDAC pin, timer event, or PWM timer event. + */ +void DAC_Open(DAC_T *dac, + uint32_t u32Ch, + uint32_t u32TrgSrc) +{ + dac->CTL &= ~(DAC_CTL_ETRGSEL_Msk | DAC_CTL_TRGSEL_Msk | DAC_CTL_TRGEN_Msk); + + dac->CTL |= (u32TrgSrc | DAC_CTL_DACEN_Msk); +} + +/** + * @brief Disable DAC analog power. + * @param[in] dac Base address of DAC module. + * @param[in] u32Ch Not used in M451 Series DAC. + * @return None + * @details Disable DAC analog power for saving power consumption. + */ +void DAC_Close(DAC_T *dac, uint32_t u32Ch) +{ + dac->CTL &= (~DAC_CTL_DACEN_Msk); +} + +/** + * @brief Set delay time for DAC to become stable. + * @param[in] dac Base address of DAC module. + * @param[in] u32Delay Decides the DAC conversion settling time, the range is from 0~(1023/PCLK*1000000) micro seconds. + * @return Real DAC conversion settling time (micro second). + * @details For example, DAC controller clock speed is 72MHz and DAC conversion setting time is 1 us, SETTLET (DAC_TCTL[9:0]) value must be greater than 0x48. + * @note User needs to write appropriate value to meet DAC conversion settling time base on PCLK (APB clock) speed. + */ +float DAC_SetDelayTime(DAC_T *dac, uint32_t u32Delay) +{ + SystemCoreClockUpdate(); + + dac->TCTL = ((SystemCoreClock * u32Delay / 1000000) & 0x3FF); + + return ((dac->TCTL) * 1000000 / SystemCoreClock); +} + + + +/*@}*/ /* end of group DAC_EXPORTED_FUNCTIONS */ + +/*@}*/ /* end of group DAC_Driver */ + +/*@}*/ /* end of group Standard_Driver */ + +/*** (C) COPYRIGHT 2014~2015 Nuvoton Technology Corp. ***/